US1163878A - Safety attachment for gas-burners. - Google Patents

Description

E. ANDERSON. SAFETY ATTACHMENT FOR GAS BURNERS.

APPLICATION FILED JULY 19. 1915.

1,163,878. Patented Dec.14, 1915.

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EDWARD ANDERSON, 0F MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO NELS 1. LARSON, 6F MINNEAPOLIS, IVIINNESGTA.

SAFETY ATTACHMENT FOR GAS-BURNERS.

1,163,57&

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed July 19, 1915. Serial No. 40,626.

To all whom it may concern Be it known that I, EDWARD ANDERSON, a citizen of the United States. residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Safety Attachments for Gas-Burners, of which the following is a specification.

My invention relates to improvements in safety attachments for gas burners, andhas for its o ject to provide an improved device which will operate automatically to shut ofl the supply of gas in case the light should be blown out by some person ignorantof the nature of gas lighting or accidentally by the wind or a careless user.

In carrying out the invention I have provided for the burner a movable wing attachment arranged in such close proximity to the end of the burner as to be acted upon by the same breath of air that blows out the gas, and operative upon a valve constructed in such a way that it will be extremely sensitive and positive in its action, so that it will be readily and unfailingly closed by the mo tion imparted to the fan by the air blast. The invention is equally applicable to a burner of ordinary construction or to a mantle, whether upright or inverted.

More particularly the invention consists in the construction, combination, and arrangement of parts hereinafter shown and described. I

In the accompanying drawings I have shown an embodiment of the invention applied to an ordinary upright burner.

In the drawings, Figure 1 is a sideelevation of a gas burner fitted with my improved attachment with some parts broken away and some in section to show the valve construction; Fig. 2 is a front elevation of the burner with the fan and part of the valve casing broken away and the valve mechanism in section, showing the valve in closed position; Fig. 3 is a view partly in front elevation and partly in vertical section of the gas burner and valve, showing the valve in open position; and Fig. 4 is a top View of the burner and attachment.

In the drawings 2 represents an upright burner of usual construction and 3 the gas pipe leading to it. In this pipe is arranged a valve chamber 4 which is here shown connected with the pipe by means of a screw threaded coupling 5 provided interiorly With an annular shoulder 6. In the chamber is a valve plate or disk 7 having a central upwardly tapered boss 8, preferably conical or pyramidal in shape so as to terminate in a point. The valve disk is held normally pressed forward against the annular shoulder 9 at the upper or outer end of the chamher by means of a coil spring 10 interposed between the disk and the shoulder 6, an annular packing strip 11 being preferably inserted between the disk and the shoulder in 1order to insure the complete closure ofthe va ve.

Rotatably supported in the casing of the valve chamber above the shoulder 9 is a horizontal pin 12. On this pin is a radially extending trigger 13 having a knife edge in positlon to engage and w pe the boss 8 and thereby thrust the disk 7 away from its seat so as to open the valve, as shown in Figs. 1 and 3. "When the trigger rests against the apex of the boss, the disk will be held pressed back from its seat until the pin 12 is turned. The pin 12 projects outwardly from y the valve chamber and upon the outwardly projected portion is a spindle 14 having at its outer end a plurality of radial wings or fan blades 15 extending close enough to the burner to leave only a small clearance be tween the burner and the adjacent wings. The spindle 14 is mounted to stand in the same plane as the trigger 13 but on the opposite side of the pin 12, so that when the pin is turned to move the spindle into vertical position and bring the fan close to the burner as shown in Fig. 1, the trigger will rest against the apex of the valve boss 8 and hold the valve open. The fan blades or wings 15 are preferably of mica or other light, stiff material. They may be secured to the spindle in any suitable way, but I prefer to mount them within the radial arms 16 of a pair of metal caps or plates 17 which are apertured to fit over the spindle 14, the arms 16 being preferably bent over on each side of the mica wings, so as to form a groove or channel within which the wings can be removably held.

The operation of the structure is as follows: WVhen the burner is in use the spindle and fan are set in vertical position, as shown in Fig. 1, with the trigger 13 resting against the conical valve boss 8 to press the valve disk away from its seat and hold the valve open. In this position the gas can pass the valve freely and supply the flame at the end of the burner. If now there should be a blast of air sufficient to blow out the gas the blast will also strike the closely adjacent wings 15 and oscillate the spindle 1-l, thereby turning the pin 12, and carrying the trigger 13 off the apex of the valve boss 8. This will allow the valve disk 7 to spring forward under the pressure of its spring 10 to close the valve. The valve will then be kept closed by the spring until the spindle is again turned by hand to vertical position, to bring the trigger 13 against the apex of the boss. It Will be seen that the point of contact between the trigger and the boss is so small that the valve will be released the mement the spindle let begins to tip, and that the whole attachment is so sensitive as to be operated by any blast of air strong enough to blow out the gas.

\Vhile I have here shown the invention applied to an ordinary upright gas burner it will be evident that it is equally applicable to a mantle burner, and, by inverting the position of the fan-spindle, trigger and valve, to an inverted light, where the supply pipe and valve chamber are above the burner instead of below it.

I claim as my invention:

1. The combination with a gas burner and a valve chamber communicating therewith, of a spring pressed valve disk seating within the chamber and normally closing the opening therethrough, a transverse pin journaled in the casing of said chamber and projecting outwardly therefrom, said pin having a radial trigger within the chamber in position to engage and depress the valve disk when the pin is turned, a spindle mounted upon the outwardly projecting portion of the pin, said spindle and trigger extending in opposite radial directions from the pin, and a fan carried by said spindle adjacent to the burner, whereby when the spindle is turned into vertical position the fan will be in close proximity to the burner and the trigger will rest against the valve disk and hold the valve open; 7

2. The combination witha gas burner and a valve chamber communicating therewith, of a spring pressed valve disk seating within the chamber and having an upwardly tapered boss, a transverse pin journaled in the casing of said chamber and projecting outwardly therefrom, a radial trigger carried by the pin within the chamber in position to wipe the boss and thereby depress the valve disk when the pin is turned, a spindle mounted upon the pin outside the chamber, said spindle and trigger extending in opposite radial directions from the pin, and a fan carried by said spindle, whereby when the spindle is turned into vertical position the fan Will be in close proximity to the burner and the trigger will rest against the apex of the boss of the depressed valve disk and hold the valve open. 3. The combination with a gas burner and a valve chamber communicating therewith, of a spring pressed valve disk seating with in the chamber and normally closing the opening therethrough, a transverse pin journaled in the casing of said chamber and projecting outwardly therefrom, a radial trigger carried by the pin within the chamber in position to engage and depress the valve disk when the pin is turned, and a radial spindle mounted upon the pin outside the chamber and having a fan at its outer end, said spindle and trigger being so positioned that when the spindle is in vertical position the fan will be in close proximity to the burner and the trigger will rest against the valve disk and hold the valve open.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD ANDERSON. Witnesses:

ARTHUR P. Lo'rHRoP, H. SwANsom' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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